Cooling device for furnace-walls.



;U ITED PAT-ENT OFF-ICE,

GUY o HNson, oF EMBREVILLE; TENNESSEE CO O LING DEvtQE FOR FU'RNACE WALL srncmcnrronforming per@ f Le ters Patents noxesee e, dated September 26, 1899.

Application filed December 24.18.98.; Serial No. V'TODMZS. (Nomodeld V To all whom mcyconczr: Be it known that I, R. JOHNSON a citi-- zen of the United States, residi n-g at Embreville, in the countyof Washington and State of Tennessee, have inven ted'new :ind useful Improvenents in Cooli'ng Devices for Fur naceWValls, of which the follow-ing is a specification.

This invention relates to cooling devices for furnace-walls, and moreespecially toeooling-plates and'their 'protecti ve envelops or;

4 to facilitate the insertion and renoval of' the cooling-plntes, and to increase' the stre-ngth of such devices and niore firmly u-n-ite them with the furnnce-wnlls.

To these ends my invention consists in the features and in the constrncticn, combinetion, and arrangenent of parts hereinafter described,- and particularly pointed ont in the claims following the description; reference' being had to the acconpanying drnwings, forming a part of this specificationgvherein- Fignrc 1 is a sectional View of a portion of the bosh-wallof e blast-furnnce and of the cooling-plate and jacket in place therein; Fig. 2 is a sectional View taken on the line 2 2 of Fig. l; and Fig. 3 is a perspect-ive View of the coolingplote and jacket, showing the parts separated. I r

Referring to the drawings forming a part of this specification, the nnmeral 1 indicates the bosh-wall of e blast-fnrnace, constrn cted of refractory bricks 'in the usual manner. During the course of the Construction of the furnace when the bosh wall 1 has been built up to the proper height my improved cooling devices are inserted therein, and which I will now describe.

The nnmeral 2 indicates the bottom of one of the protect-We jackets, consisting' of a castiron plote segnentalin shap'e and provided at its opposite ends with upright "sides 3, said sides lying" in planes forming radii struck from the center of the fnrnace. i Forned on the upper edge of each of the sides 3 is a. rectengular lug 4, which projects a; slight distance above the side 3, said lugs being formed at cor-responding points between theends of the sides. 'The enter npper ,edge of each of thesides 3 projects beyond the enter edge of thejbettom 2, as at 5, and from its'onter "extrenity isinclined downward to the outer edge of'the bottom?, as indicnted at 6.

The numeral 7 indicates the segmentet cast- 'iron' top of the jacket, similar in size and shepe' to the bottom 2 and provided upon its under. side with a groove 8. When the top 7 of? the jacket is placed on the sides 3, the' olugs 4 fit into the groovesB and eifectually prevent any letersi movement of seid top relatively to the sides.

.It will of course be nnderstoojd thate number of the jackets'will be provided for each turnace and that' they will `be arranged in one or moreseries in the bosh wall.

Thebosh-wall having been built' up to the requisite height, as before described, the bot toros' of the jackets are then laid thereon in proper order andthe tops fitted thereon, efter which the-brickwork is continned. 'In rplacing the j'acket's in position their inner edges should bearranged slightly beyond (in an outward direction) the inner surface of the bosh-wall. After all the jackets have been placed in position and bonded in the bosh-wall the cooling-plates are inserted. These pletes consist-each of a hollow bronze box 9, segmental in shepe and rectengulnr incross-section, the sides of each of the ple't-es being arallel to the sides 3 of the bottons 2 of the jackets and the outside di mensionof each of seid plates bo- 'ing slightly less than the inside'dimensions of itsjacket. A trensverse pertition 10 extends from the enter wall of=each of the coolingplates to a point near the inner edge thereof, and fitted in ;the outer wall of each of the cooling-plates and near -the opposite ends thereof aretwo Water-pipes, oneof theni, as

` 11, being on inlet-pipe and the otherrl, be-

ing en ontletpipe. Forned on the onterwall of 'the cooling-plate is a penforated lug or cer 13, in which &suitable inplenent may be in- 'sorted to draw ont the cooling-Plato froni its jacket. One such coolingflete is inserted in each of the' jackets its inner end projecting beyond the inner endet' the. jacket and substantielly in alinement with the innersn face of the bosh wall. Stifl cley is then IOO packed in the spaces between the outer surfaces of the cooling-plates and the inner surfaces of the jaekets. Finally a retain'ngband 14 is placed about 'the bosh-Wall and jackels and rests upon the outward extensions 5 of the letter. The retaining-band is tigltly bonded about the bosh-wall to hold the jackets firmly in place.

The water-pipes are connected to any suitable Water-supplyto maintain a constant circulation of water through the cooling-plates to prevent the destruetive cffect of the excessive and eontinued hezt from destroyiug or injuriously affecting the bosh-Wall. By making the cooling-plntes of bronze, copper, or similar material said plates are not so quickly deteriorated by the heat and their tendency to stick to the molten mass under treatment is avoided. The jackets beingsubjected to zt less degree of heat are, for the sake of eheapness, made of cast-iron or the like. hen from long-eontinued use the cooling-plates become unserviceable, they may be quickly removed by placing a suitable implement in the perforated ears and pulling them bodily from the jackets, after which new plates may be readily and quickly inserted and packed in place. Having thus described my invention, what I claim is-- 1. In a cooling (levice for the bosh-Walls of frnaces, the eonbination With a, proteetive jacket comprising a segmental bottom provided :tt its opposite ends with upright sides having upWardly-projecting lugs forrned on their upper edges, a segmental top grooved upon its lower side to fit said lugs and fitted upon the upper edges of said sides, and a cooling-plate removably fitted in said jacket and provided With means for mainteining a eirculation of zt eoolinginedim therein, sub` stantially as described.

2. In a cooling device for the boshalls of furnaoes, the eombination With a protective jacket comprising a segmental bottom provided at its opposite ends With upright sides havingupwardly-projecting lugs formed on their npper edges and outWardly-projeoting extensions formed on their upper outer edges for supporting a retaining-band, a segmental top grooved on its under side and fitted upon the upper ed ges of said sides, and a retainingband supported on the extensions of the said sides, of a. eooling-plate removably fitted in said jacket and provided with means for maintaininge ciroulation of a, cooling medium therein, substantially as described.

3. In a cooling devicefor the hosh-Walls of furneees, the comhination With a proteetive jete-ket comprising a segmental bottom provided at its opposite ends with upright sides having upWardly-projecting lugs formed on their upper edges, and a segmental top groov d upon its lower side to fit said lugs and fitted upon the upper edges of said sides, of a cooling-plate eomprising a hollow box similar in shape to but smaller in cross-seetion than the jacket, said cooling-plane beinr arranged ooncentrieally within the jacket and packed therein With elay, and Water inlet and outlet pipes fitted in the opposite ends of the cooling-pinte, substan tially as described.

In testimony Whereof I have hereunto set my hand in presence of two subseribing witnesses.

GUY R. JOHNSON. Witnesses M. H. MAURY, ADA MARTINDILL. 

